Upsetting-extruding and backpressure composite forming die for bevel gear of differential mechanism

Abstract

The utility model relates to the technical field of differential bevel gear dies, and discloses a differential bevel gear upsetting-extruding and backpressure composite forming die which comprises a bevel gear upper die, and a bevel gear lower die matched with the bevel gear upper die is arranged at the bottom of the bevel gear upper die. According to the upsetting-extruding and backpressure composite forming die for the bevel gear of the differential mechanism, a longitudinal rigid uniform force beam is arranged in the first tough rigid part, and a transverse rigid uniform force beam is arranged in the second tough rigid part, so that the upsetting-extruding and backpressure composite pressure is conveniently uniform, meanwhile, the toughness strength of the die can be improved, and die damage caused by extrusion is reduced; a force-uniformizing rigid plate is convenient for fixing two extrusion rods through a composite clamping groove and is convenient for uniformly extruding consistent pressure; a telescopic spring is convenient for driving the force-uniformizing rigid plate to perform telescopic resetting; the extrusion rods drive the force-uniformizing rigid plate to extrude and be attached to a limiting clamping groove; a force-guiding rigid plate is in contact with a first tough rigid piece and a second tough rigid piece, so that uniform pressure conduction is convenient; and the upsetting-extruding and backpressure compounding effect of the bevel gear of the differential mechanism is improved.

Description

Technical Field

[0001] This utility model relates to the field of differential bevel gear mold technology, specifically a differential bevel gear upsetting and back pressure composite forming mold. Background Technology

[0002] The differential is mainly composed of left and right half-shaft gears, two planetary gears and a gear carrier. Its function is to enable the left and right drive wheels to rotate at different speeds when the car is turning or driving on uneven roads, so as to ensure that the drive wheels on both sides make pure rolling motion.

[0003] In the existing technology, differential bevel gears are formed by a combination of direct upsetting and back pressure in the cold extrusion forming process.

[0004] However, the existing composite forming molds for upsetting and back pressure of differential bevel gears have poor toughness and strength. Uneven stress during upsetting and back pressure can easily damage the mold and affect the processing effect. Therefore, there is an urgent need for a composite forming mold for upsetting and back pressure of differential bevel gears. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this utility model is to provide a composite forming mold for upsetting and back pressure of differential bevel gears, so as to solve the problem that the composite forming mold for upsetting and back pressure of differential bevel gears proposed in the background art has poor toughness and strength, and the uneven force of upsetting and back pressure can easily cause damage to the mold and affect the processing effect.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a differential bevel gear upsetting and back pressure composite forming mold, comprising an upper bevel gear mold, a lower bevel gear mold adapted to the bottom of the upper bevel gear mold, a bevel gear mold groove opened at the bottom of the upper bevel gear mold, a bevel gear mold groove also opened at the top of the lower bevel gear mold, a first locking hole provided at the bottom of the lower bevel gear mold, a first tough rigid member adapted to the inner wall of the first locking hole, and a second locking hole provided at the top of the upper bevel gear mold, a second tough rigid member adapted to the inner wall of the second locking hole.

[0009] As a preferred technical solution of this utility model, a limiting groove is provided on the top of the upper bevel gear mold, and a limiting groove is also provided on the bottom of the lower bevel gear mold. A movable locking hole connected to the first locking hole is provided at the bottom of the limiting groove. A uniform force plate adapted to it is provided on the inner wall of the limiting groove, and a force guiding plate adapted to the movable locking hole is provided on one side of the uniform force plate.

[0010] As a preferred technical solution of this utility model, the four corners of the limiting slot are provided with spring slots, the bottom of the spring slot is connected to one end of a telescopic spring, and the other end of the telescopic spring is connected to one side of the uniform force plate at the four corners.

[0011] As a preferred technical solution of this utility model, the bottom of the upper bevel gear mold is provided with a connecting ring, and the top of the lower bevel gear mold is provided with a connecting groove that matches the connecting ring. The upper bevel gear mold is connected and fixed by the connecting ring and the connecting groove.

[0012] As a preferred technical solution of this utility model, the bottom four corners of the upper bevel gear mold are provided with fixing slots, and the top four corners of the lower bevel gear mold are provided with fixing blocks that are adapted to the fixing slots. The lower bevel gear mold is connected and fixed to the fixing slots by setting the fixing blocks.

[0013] As a preferred embodiment of this utility model, the first tough rigid member and the second tough rigid member are staggered.

[0014] As a preferred technical solution of this utility model, the other side of the uniform force plate is symmetrically provided with composite slots for upsetting and back pressure.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This differential bevel gear upsetting and back pressure composite forming mold has an upper bevel gear mold and a lower bevel gear mold fitting together through a bevel gear mold groove to facilitate upsetting and back pressure composite processing of the differential bevel gear. A first clamping hole fixes a first tough rigid member, and a second clamping hole fixes a second tough rigid member. The first tough rigid member has a longitudinal rigid uniform force beam inside, and the second tough rigid member has a transverse rigid uniform force beam inside, which facilitates uniform pressure of upsetting and back pressure composite, and can improve the toughness and strength of the mold and reduce mold damage caused by extrusion. The connecting clasp and connecting slot, as well as the fixing block and fixing slot, form a tenon and mortise structure, which facilitates the connection and limiting of the upper and lower bevel gear molds, and facilitates the forming of the differential bevel gear.

[0017] 2. The differential bevel gear upsetting and back pressure composite forming mold has a uniform force plate that easily fixes two extrusion rods through a composite slot, facilitating uniform extrusion of the appropriate pressure. The telescopic spring facilitates the telescopic and repositioning of the uniform force plate. The extrusion rods drive the uniform force plate to press against the limiting slot, and the spring slot facilitates the storage of the retracted telescopic spring. The force guiding plate contacts the first and second toughness rigid components, facilitating uniform pressure transmission. This improves the effect of differential bevel gear upsetting and back pressure composite forming and alleviates mold deformation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the upper mold structure of the bevel gear of this utility model;

[0020] Figure 3 This is a schematic diagram of the bevel gear lower mold structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the upper mold structure of the bevel gear of this utility model;

[0022] Figure 5 This is a partial structural diagram of the present invention.

[0023] In the diagram: 1. Upper bevel gear mold; 2. Lower bevel gear mold; 3. Bevel gear mold groove; 4. First locking hole; 5. First rigid member; 6. Second locking hole; 7. Second rigid member; 8. Connecting slot; 9. Connecting ring; 10. Fixed slot; 11. Fixed block; 12. Limiting slot; 13. Movable locking hole; 14. Spring slot; 15. Uniform force plate; 16. Force guiding plate; 17. Telescopic spring; 18. Composite slot. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5This utility model provides a technical solution: a composite forming mold for upsetting and back pressure of a differential bevel gear, including an upper bevel gear mold 1, a lower bevel gear mold 2 adapted to the bottom of the upper bevel gear mold 1, a bevel gear mold groove 3 formed at the bottom of the upper bevel gear mold 1, a bevel gear mold groove 3 also formed at the top of the lower bevel gear mold 2, a first locking hole 4 formed at the bottom of the lower bevel gear mold 2, a first tough rigid member 5 adapted to the inner wall of the first locking hole 4, and a second locking hole 6 formed at the top of the upper bevel gear mold 1, the inner wall of the second locking hole 6 being adapted to the... The second toughness rigid member 7 and the first toughness rigid member 5 are staggered. The upper mold 1 and the lower mold 2 of the bevel gear fit together through the bevel gear mold groove 3 to facilitate the upsetting and back pressure combined processing of the differential bevel gear. The first clamping hole 4 fixes the first toughness rigid member 5 and the second clamping hole 6 fixes the second toughness rigid member 7. The first toughness rigid member 5 is provided with a longitudinal rigid uniform force beam, and the second toughness rigid member 7 is provided with a transverse rigid uniform force beam, which facilitates the uniform pressure of the upsetting and back pressure combined processing, and at the same time can improve the toughness strength of the mold and reduce the mold damage caused by extrusion.

[0026] A limiting groove 12 is provided on the top of the upper bevel gear mold 1, and a limiting groove 12 is also provided on the bottom of the lower bevel gear mold 2. A movable locking hole 13 communicating with the first locking hole 4 is provided at the bottom of the limiting groove 12. A uniform force plate 15 is provided on the inner wall of the limiting groove 12, and a force guiding plate 16 adapted to the movable locking hole 13 is provided on one side of the uniform force plate 15. Spring slots 14 are provided at the four corners of the limiting groove 12. One end of a telescopic spring 17 is connected to the bottom of the spring slot 14, and the other end of the telescopic spring 17 is connected to one of the four corners of the uniform force plate 15. On the other side of the plate 15, there are symmetrical composite slots 18 for upsetting and back pressure. The uniform force plate 15 can be fixed with two extrusion rods through the composite slots 18 to facilitate uniform extrusion of the corresponding pressure. The telescopic spring 17 can easily drive the uniform force plate 15 to extend and retract. The extrusion rod drives the uniform force plate 15 to press and fit against the limiting slot 12. The spring slot 14 can easily store the retracted telescopic spring 17. The force guiding plate 16 contacts the first toughness rigid member 5 and the second toughness rigid member 7 to facilitate uniform pressure transmission. This can improve the effect of upsetting and back pressure of the differential bevel gear and alleviate mold deformation.

[0027] The upper bevel gear mold 1 has a connecting ring 9 at its bottom, and the lower bevel gear mold 2 has a connecting groove 8 at its top that matches the connecting ring 9. The upper bevel gear mold 1 is connected and fixed to the connecting groove 8 by the connecting ring 9. The four corners at the bottom of the upper bevel gear mold 1 have fixing grooves 10, and the four corners at the top of the lower bevel gear mold 2 have fixing blocks 11 that match the fixing grooves 10. The lower bevel gear mold 2 is connected and fixed to the fixing grooves 10 by the fixing blocks 11. The connecting ring 9 and the connecting groove 8, as well as the fixing blocks 11 and the fixing grooves 10, form a mortise and tenon structure, which facilitates the connection and positioning of the upper bevel gear mold 1 and the lower bevel gear mold 2, and facilitates the forming of the differential bevel gear.

[0028] Working principle: First, the upper bevel gear mold 1 and the lower bevel gear mold 2 fit together through the bevel gear mold groove 3 to facilitate the combined upsetting and back pressure processing of the differential bevel gear. The first clamping hole 4 fixes the first tough rigid member 5, and the second clamping hole 6 fixes the second tough rigid member 7. The first tough rigid member 5 has a longitudinal rigid uniform force beam inside, and the second tough rigid member 7 has a transverse rigid uniform force beam inside, which facilitates the uniform pressure of the combined upsetting and back pressure, and at the same time improves the toughness and strength of the mold and reduces mold damage caused by extrusion. The connecting retaining ring 9 and the connecting retaining groove 8, and the fixing retaining block 11 and the fixing retaining groove 10 respectively form tenons. The mortise and tenon structure facilitates the connection and positioning of the upper bevel gear mold 1 and the lower bevel gear mold 2, which is conducive to the forming of the differential bevel gear. The uniform force plate 15 is conveniently fixed with two extrusion rods through the composite slot 18, which facilitates uniform extrusion of the corresponding pressure. The telescopic spring 17 facilitates the telescopic and repositioning of the uniform force plate 15. The extrusion rod drives the uniform force plate 15 to press and fit against the limiting slot 12. The spring slot 14 facilitates the storage of the retracted telescopic spring 17. The force guiding plate 16 contacts the first toughness rigid member 5 and the second toughness rigid member 7, which facilitates the uniform transmission of pressure and can improve the effect of differential bevel gear upsetting and back pressure composite, and alleviate mold deformation.

[0029] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A differential bevel gear upsetting and back pressure combined forming die, characterized in that: The bevel gear upper mold (1) is provided with a bevel gear lower mold (2) matched therewith at the bottom, the bevel gear upper mold (1) is provided with a bevel gear mold groove (3) at the bottom, the bevel gear lower mold (2) is also provided with a bevel gear mold groove (3) at the top, the bottom of the bevel gear lower mold (2) is provided with a first clamping hole (4), the inner wall of the first clamping hole (4) is provided with a first flexible rigid member (5) matched therewith, the top of the bevel gear upper mold (1) is provided with a second clamping hole (6), the inner wall of the second clamping hole (6) is provided with a second flexible rigid member (7) matched therewith.

2. The combined back pressure and upset forming die for bevel gear of a differential according to claim 1, characterized in that: The top of the bevel gear upper mold (1) is provided with a limiting clamping groove (12), the bottom of the bevel gear lower mold (2) is also provided with a limiting clamping groove (12), the bottom of the limiting clamping groove (12) is provided with a movable clamping hole (13) communicated with the first clamping hole (4), the inner wall of the limiting clamping groove (12) is provided with a uniform force rigid plate (15) matched therewith, one side of the uniform force rigid plate (15) is provided with a force guiding rigid plate (16) matched with the movable clamping hole (13).

3. The bevel gear upsetting and back pressure combined forming die of claim 2, wherein: The limiting clamping groove (12) is provided with a spring clamping groove (14) at the four corners, one end of the telescopic spring (17) is connected to the bottom of the spring clamping groove (14), the other end of the telescopic spring (17) is connected to the four corners of one side of the uniform force rigid plate (15).

4. The bevel gear upset-back extrusion compound forming die of claim 1, wherein: The bottom of the bevel gear upper mold (1) is provided with a connecting clamping ring (9), the top of the bevel gear lower mold (2) is provided with a connecting clamping groove (8) matched with the connecting clamping ring (9), the bevel gear upper mold (1) is connected and fixed through the connecting clamping ring (9) and the connecting clamping groove (8).

5. The bevel gear upset-back extrusion compound forming die of claim 1, wherein: The bottom of the bevel gear upper mold (1) is provided with a fixed clamping groove (10) at the four corners, the top of the bevel gear lower mold (2) is provided with a fixed clamping block (11) matched with the fixed clamping groove (10), the bevel gear lower mold (2) is connected and fixed through the fixed clamping block (11) and the fixed clamping groove (10).

6. The bevel gear upset-back extrusion compound forming die of claim 1, wherein: The first flexible rigid member (5) and the second flexible rigid member (7) are staggered.

7. The bevel gear upset-back extrusion compound forming die of claim 2, wherein: The other side of the uniform force rigid plate (15) is symmetrically provided with a composite clamping groove (18) for upsetting and back pressure.

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